Heirloom corn was typically dried for later use and stone grinding, or was fresh-roasted. The corn of many Native Peoples of the Americas is called "Flint Corn," because to the natives it was as hard as flint, whereas the dried corn used by migrated Europeans has been called "Dent Corn," largely because once dried it tends to have a dent on the top of the kernels. They share the same category since they are all used for cornmeal.
More than 90% of modern-day, USA-grown corn is GMO-engineered and has a number for a name! That fact reminds me of the 1964 "Secret Agent Man" TV show, the title song by Johnny Rivers: 
"They've given you a number, oh they've taken away your name..."

My corn is nearly all heirloom and it all has a name. No numbers, no GMOs, no seed death genes.

Dry Dent or Flint Corn

100 "Boone County" White Corn seeds
$3.75
$3.75
25 "Peruvian Purple" Corn, Maiz Morado
$3.98
$3.98
50 "Oaxacan Green" Indian Corn, USDA Organic
$2.75
$2.75
25 "Cherokee White" Indian Corn seeds
$2.50
$2.50
"Red Posole" or "Maiz Rojo" Red Dent Corn Seeds, 4 sizes
$2.50 - $9.99
$2.50 - $9.99
75 "Hickory Cane" White Dent Corn
$2.98
$2.98
50 "Kentucky Rainbow" Dent Corn, USDA Organic
$3.95
$3.95
50 "Strubbes Orange" Dent Corn, USDA Organic
$3.95
$3.95
50 "Seneca Red Stalker" Indian Corn, USDA Organic
$2.95
$2.95
"Painted Mountain" Indian Corn, USDA Organic, 3 sizes
$3.50 - $9.99
$3.50 - $9.99
50 "Jerry Peterson" Blue Dent Corn, USDA Organic
$3.50
$3.50
50 "Bloody Butcher" Red Indian Corn, USDA Organic
$3.75
$3.75
100 "Bloody Butcher" Red Indian Corn
$3.49
$3.49
"Hopi Blue" Sweet Corn seeds, High Protein, USDA Organic, 2 sizes
$3.75 - $9.99
$3.75 - $9.99
50 "Floriani Red" Dent Corn, USDA Organic
$2.75
$2.75
"Giant Peruvian" or "Cuzco" White Corn seeds, Maiz Blanco, Pozoli, Inca
$3.50 - $24.22
$3.50 - $24.22

Out of stock

50 "Cherokee Glass Gem" Indian Corn seeds
$3.33
$3.33
50 "Black Aztec" Corn seeds
$3.25
$3.25
100 "Silver King" White Dent Corn, 1890 Heirloom, Wisc. #7
$3.50
$3.50
30 Cherokee White Gourdseed Indian Corn seeds
$2.95
$2.95
35 Virginia White Gourdseed Indian Corn seeds, USDA Organic
$2.95
$2.95
75 Neal's Paymaster (Tennessee Red Cob) Dent Corn seeds, USDA Organic
$3.50
$3.50
50 "Pungo Creek" Butcher Indian Corn, USDA Organic
$3.50
$3.50
100 "Hopi Blue" Corn seeds, High Protein Sweet corn, USDA Organic ORE
$3.95
$3.95
75 Cherokee Long Ear Rainbow Popcorn seeds, mini cob, USDA Organic
$3.25
$3.25
100 "Reid's" Yellow Dent Corn, High Protein, USDA Organic
$2.95
$2.95
'Piper's Hi-P' Dent Corn, High Protein variety, gold and blue, N.C., 3 sizes
$3.50 - $19.98
$3.50 - $19.98

Out of stock

50 'Bellingham Blue' Sweet Corn, no sprays, USA
$4.95
$4.95
100 "Eureka Ensilage" Heirloom White Dent Corn, USA
$2.95
$2.95
50 'Maiz Prieto' Mexican Roasting Posole Corn, Dark Blue Seed Mix, USDA Organic
$3.75
$3.75
50 Japonica Corn, Striped-Leafed Japanese Maize, USDA Organic
$2.98
$2.98
50 Sokoki Red and Gold Flint Corn, Vermont
$2.95
$2.95
50 "Mandan Bride" Indian Corn seeds, USDA Organic
$3.50
$3.50
50 "Rio Grande Pueblo Blue" Corn seeds
$3.50
$3.50
50 "Hopi Double Red" Corn seeds, Sweet corn/ Dent corn
$3.98
$3.98
50 "Trucker's Favorite" Heirloom White Roasting Corn
$2.95
$2.95
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